diff --git a/tests/lib/LanguageModel/LanguageModelManagerTest.php b/tests/lib/LanguageModel/LanguageModelManagerTest.php
new file mode 100644
index 0000000000000..80cf4348a0118
--- /dev/null
+++ b/tests/lib/LanguageModel/LanguageModelManagerTest.php
@@ -0,0 +1,269 @@
+<?php
+/**
+ * Copyright (c) 2023 Marcel Klehr <mklehr@gmx.net>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace Test\LanguageModel;
+
+use OC\AppFramework\Bootstrap\Coordinator;
+use OC\LanguageModel\Db\TaskMapper;
+use OC\LanguageModel\LanguageModelManager;
+use OC\LanguageModel\TaskBackgroundJob;
+use OCP\BackgroundJob\IJobList;
+use OCP\Common\Exception\NotFoundException;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\IServerContainer;
+use OCP\LanguageModel\Events\TaskFailedEvent;
+use OCP\LanguageModel\Events\TaskSuccessfulEvent;
+use OCP\LanguageModel\FreePromptTask;
+use OCP\LanguageModel\HeadlineTask;
+use OCP\LanguageModel\IHeadlineProvider;
+use OCP\LanguageModel\ILanguageModelManager;
+use OCP\LanguageModel\ILanguageModelProvider;
+use OCP\LanguageModel\ILanguageModelTask;
+use OCP\LanguageModel\ISummaryProvider;
+use OCP\LanguageModel\SummaryTask;
+use OCP\LanguageModel\TopicsTask;
+use OCP\PreConditionNotMetException;
+use Psr\Log\LoggerInterface;
+use Test\BackgroundJob\DummyJobList;
+
+class TestVanillaLanguageModelProvider implements ILanguageModelProvider {
+	public bool $ran = false;
+
+	public function getName(): string {
+		return 'TEST Vanilla LLM Provider';
+	}
+
+	public function prompt(string $prompt): string {
+		$this->ran = true;
+		return $prompt . ' Free Prompt';
+	}
+}
+
+class TestFailingLanguageModelProvider implements ILanguageModelProvider {
+	public bool $ran = false;
+
+	public function getName(): string {
+		return 'TEST Vanilla LLM Provider';
+	}
+
+	public function prompt(string $prompt): string {
+		$this->ran = true;
+		throw new \Exception('ERROR');
+	}
+}
+
+class TestFullLanguageModelProvider implements ILanguageModelProvider, ISummaryProvider, IHeadlineProvider {
+	public function getName(): string {
+		return 'TEST Full LLM Provider';
+	}
+
+	public function prompt(string $prompt): string {
+		return $prompt . ' Free Prompt';
+	}
+
+	public function findHeadline(string $text): string {
+		return $text . ' Headline';
+	}
+
+	public function summarize(string $text): string {
+		return $text. ' Summarize';
+	}
+}
+
+class LanguageModelManagerTest extends \Test\TestCase {
+	private ILanguageModelManager $languageModelManager;
+	private Coordinator $coordinator;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->languageModelManager = new LanguageModelManager(
+			\OC::$server->get(IServerContainer::class),
+			$this->coordinator = \OC::$server->get(Coordinator::class),
+			\OC::$server->get(LoggerInterface::class),
+			\OC::$server->get(IJobList::class),
+			\OC::$server->get(TaskMapper::class),
+		);
+	}
+
+	public function testShouldNotHaveAnyProviders() {
+		$this->assertCount(0, $this->languageModelManager->getAvailableTasks());
+		$this->assertCount(0, $this->languageModelManager->getAvailableTaskTypes());
+		$this->assertFalse($this->languageModelManager->hasProviders());
+		$this->expectException(PreConditionNotMetException::class);
+		$this->languageModelManager->runTask(new FreePromptTask('Hello', 'test', null));
+	}
+
+	public function testProviderShouldBeRegisteredAndRun() {
+		$this->coordinator->getRegistrationContext()->registerLanguageModelProvider('test', TestVanillaLanguageModelProvider::class);
+		$this->assertCount(1, $this->languageModelManager->getAvailableTasks());
+		$this->assertCount(1, $this->languageModelManager->getAvailableTaskTypes());
+		$this->assertTrue($this->languageModelManager->hasProviders());
+		$this->assertEquals('Hello Free Prompt', $this->languageModelManager->runTask(new FreePromptTask('Hello', 'test', null)));
+
+		// Summaries are not implemented by the vanilla provider, only free prompt
+		$this->expectException(PreConditionNotMetException::class);
+		$this->languageModelManager->runTask(new SummaryTask('Hello', 'test', null));
+	}
+
+	public function testProviderShouldBeRegisteredAndScheduled() {
+		// register provider
+		$this->coordinator->getRegistrationContext()->registerLanguageModelProvider('test', TestVanillaLanguageModelProvider::class);
+		$this->assertCount(1, $this->languageModelManager->getAvailableTasks());
+		$this->assertCount(1, $this->languageModelManager->getAvailableTaskTypes());
+		$this->assertTrue($this->languageModelManager->hasProviders());
+
+		// create task object
+		$task = new FreePromptTask('Hello', 'test', null);
+		$this->assertNull($task->getId());
+		$this->assertNull($task->getOutput());
+
+		// schedule works
+		$this->assertEquals(ILanguageModelTask::STATUS_UNKNOWN, $task->getStatus());
+		$this->languageModelManager->scheduleTask($task);
+
+		// Task object is up-to-date
+		$this->assertNotNull($task->getId());
+		$this->assertNull($task->getOutput());
+		$this->assertEquals(ILanguageModelTask::STATUS_SCHEDULED, $task->getStatus());
+
+		// Task object retrieved from db is up-to-date
+		$task2 = $this->languageModelManager->getTask($task->getId());
+		$this->assertEquals($task->getId(), $task2->getId());
+		$this->assertEquals('Hello', $task2->getInput());
+		$this->assertNull($task2->getOutput());
+		$this->assertEquals(ILanguageModelTask::STATUS_SCHEDULED, $task2->getStatus());
+
+		/** @var IEventDispatcher $eventDispatcher */
+		$eventDispatcher = \OC::$server->get(IEventDispatcher::class);
+		$successfulEventFired = false;
+		$eventDispatcher->addListener(TaskSuccessfulEvent::class, function (TaskSuccessfulEvent $event) use (&$successfulEventFired, $task) {
+			$successfulEventFired = true;
+			$t = $event->getTask();
+			$this->assertEquals($task->getId(), $t->getId());
+			$this->assertEquals(ILanguageModelTask::STATUS_SUCCESSFUL, $t->getStatus());
+			$this->assertEquals('Hello Free Prompt', $t->getOutput());
+		});
+		$failedEventFired = false;
+		$eventDispatcher->addListener(TaskFailedEvent::class, function (TaskFailedEvent $event) use (&$failedEventFired, $task) {
+			$failedEventFired = true;
+			$t = $event->getTask();
+			$this->assertEquals($task->getId(), $t->getId());
+			$this->assertEquals(ILanguageModelTask::STATUS_FAILED, $t->getStatus());
+			$this->assertEquals('ERROR', $event->getErrorMessage());
+		});
+
+		// run background job
+		/** @var TaskBackgroundJob $bgJob */
+		$bgJob = \OC::$server->get(TaskBackgroundJob::class);
+		$bgJob->setArgument(['taskId' => $task->getId()]);
+		$bgJob->start(new DummyJobList());
+		$provider = \OC::$server->get(TestVanillaLanguageModelProvider::class);
+		$this->assertTrue($provider->ran);
+		$this->assertTrue($successfulEventFired);
+		$this->assertFalse($failedEventFired);
+
+		// Task object retrieved from db is up-to-date
+		$task3 = $this->languageModelManager->getTask($task->getId());
+		$this->assertEquals($task->getId(), $task3->getId());
+		$this->assertEquals('Hello', $task3->getInput());
+		$this->assertEquals('Hello Free Prompt', $task3->getOutput());
+		$this->assertEquals(ILanguageModelTask::STATUS_SUCCESSFUL, $task2->getStatus());
+	}
+
+	public function testMultipleProvidersShouldBeRegisteredAndRunCorrectly() {
+		$this->coordinator->getRegistrationContext()->registerLanguageModelProvider('test', TestVanillaLanguageModelProvider::class);
+		$this->coordinator->getRegistrationContext()->registerLanguageModelProvider('test', TestFullLanguageModelProvider::class);
+		$this->assertCount(3, $this->languageModelManager->getAvailableTasks());
+		$this->assertCount(3, $this->languageModelManager->getAvailableTaskTypes());
+		$this->assertTrue($this->languageModelManager->hasProviders());
+
+		// Try free prompt again
+		$this->assertEquals('Hello Free Prompt', $this->languageModelManager->runTask(new FreePromptTask('Hello', 'test', null)));
+
+		// Try headline task
+		$this->assertEquals('Hello Headline', $this->languageModelManager->runTask(new HeadlineTask('Hello', 'test', null)));
+
+		// Try summary task
+		$this->assertEquals('Hello Summarize', $this->languageModelManager->runTask(new SummaryTask('Hello', 'test', null)));
+
+		// Topics are not implemented by both the vanilla provider and the full provider
+		$this->expectException(PreConditionNotMetException::class);
+		$this->languageModelManager->runTask(new TopicsTask('Hello', 'test', null));
+	}
+
+	public function testNonexistentTask() {
+		$this->expectException(NotFoundException::class);
+		$this->languageModelManager->getTask(98765432456);
+	}
+
+	public function testTaskFailure() {
+		// register provider
+		$this->coordinator->getRegistrationContext()->registerLanguageModelProvider('test', TestFailingLanguageModelProvider::class);
+		$this->assertCount(1, $this->languageModelManager->getAvailableTasks());
+		$this->assertCount(1, $this->languageModelManager->getAvailableTaskTypes());
+		$this->assertTrue($this->languageModelManager->hasProviders());
+
+		// create task object
+		$task = new FreePromptTask('Hello', 'test', null);
+		$this->assertNull($task->getId());
+		$this->assertNull($task->getOutput());
+
+		// schedule works
+		$this->assertEquals(ILanguageModelTask::STATUS_UNKNOWN, $task->getStatus());
+		$this->languageModelManager->scheduleTask($task);
+
+		// Task object is up-to-date
+		$this->assertNotNull($task->getId());
+		$this->assertNull($task->getOutput());
+		$this->assertEquals(ILanguageModelTask::STATUS_SCHEDULED, $task->getStatus());
+
+		// Task object retrieved from db is up-to-date
+		$task2 = $this->languageModelManager->getTask($task->getId());
+		$this->assertEquals($task->getId(), $task2->getId());
+		$this->assertEquals('Hello', $task2->getInput());
+		$this->assertNull($task2->getOutput());
+		$this->assertEquals(ILanguageModelTask::STATUS_SCHEDULED, $task2->getStatus());
+
+		/** @var IEventDispatcher $eventDispatcher */
+		$eventDispatcher = \OC::$server->get(IEventDispatcher::class);
+		$successfulEventFired = false;
+		$eventDispatcher->addListener(TaskSuccessfulEvent::class, function (TaskSuccessfulEvent $event) use (&$successfulEventFired, $task) {
+			$successfulEventFired = true;
+			$t = $event->getTask();
+			$this->assertEquals($task->getId(), $t->getId());
+			$this->assertEquals(ILanguageModelTask::STATUS_SUCCESSFUL, $t->getStatus());
+			$this->assertEquals('Hello Free Prompt', $t->getOutput());
+		});
+		$failedEventFired = false;
+		$eventDispatcher->addListener(TaskFailedEvent::class, function (TaskFailedEvent $event) use (&$failedEventFired, $task) {
+			$failedEventFired = true;
+			$t = $event->getTask();
+			$this->assertEquals($task->getId(), $t->getId());
+			$this->assertEquals(ILanguageModelTask::STATUS_FAILED, $t->getStatus());
+			$this->assertEquals('ERROR', $event->getErrorMessage());
+		});
+
+		// run background job
+		/** @var TaskBackgroundJob $bgJob */
+		$bgJob = \OC::$server->get(TaskBackgroundJob::class);
+		$bgJob->setArgument(['taskId' => $task->getId()]);
+		$bgJob->start(new DummyJobList());
+		$provider = \OC::$server->get(TestFailingLanguageModelProvider::class);
+		$this->assertTrue($provider->ran);
+		$this->assertTrue($failedEventFired);
+		$this->assertFalse($successfulEventFired);
+
+		// Task object retrieved from db is up-to-date
+		$task3 = $this->languageModelManager->getTask($task->getId());
+		$this->assertEquals($task->getId(), $task3->getId());
+		$this->assertEquals('Hello', $task3->getInput());
+		$this->assertNull($task3->getOutput());
+		$this->assertEquals(ILanguageModelTask::STATUS_FAILED, $task2->getStatus());
+	}
+}